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APPLICATION FAILED TO START
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Description:

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class


Action:

Consider the following:
If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).

遇到了一个这样的问题，微服务springCloud的项目需要升级jdk1.8到jdk17，springboot同样由2.3.2升级到3.1，因为以前是用的mybatis-plus 3.4.2，当mybatis-plus升级后，就一直报这个错误。经过排查，gateway网关是可以正常启动的，微服务service1，在以前低版本的时候也可以正常启动，目前感觉是mybatis-plus不兼容引起的问题，因为之前无论哪个服务，同样的nacos和本地配置都是可以正常启动服务的。但当我升级后，网关可正常启动，一给网关加上mysql-connector-j的依赖jar，马上也报错这个问题，有没有大佬帮忙解答一下